Elecgene TTR testers are designed for power transformers, distribution transformers, instrument transformers, dry-type transformers, autotransformers and other single-phase or three-phase transformer applications.
Available models range from lightweight handheld TTR testers for routine field inspection to true three-phase instruments for phase-angle analysis and multifunction analyzers that combine turns ratio and winding resistance testing in one connection.
The TRT-20 is designed to test all power, instrument (CTs and PTs), and distribution transformers without the need of traditional high voltage excitation.
Built in printer
Battery powered(Optional)
Displays % error vs. name plate value
3-phase test voltage-fast testing of all transformers
The HTRT-10 is an automatic hand-held battery operated transformer turns ratio test set, allows the user to operate the test set while holding it in one hand.
Battery operated
Lightweight – 1.7 kg
Handheld design, easy to carry
Simple, one-button operation
Rugged metal connectors on leads and unit
The three-phase transformer winding analyzer can perform polarity validation, turns ratio and winding resistance tests with the same one-time lead connection.
With TTR and winding resistance tests
TTR, range up to 10000,±0.1 % accuracy
Save time and protect operators with efficient one-time lead connection for tests
Battery powered
Elecgene TTR testers support three-phase transformer turns ratio testing, helping users measure and compare transformer ratios across phases for efficient transformer testing.
Elecgene TTR solutions cover a wide transformer turns ratio range, with model-specific measurement accuracy and resolution designed for different transformer testing requirements.
Depending on the model, Elecgene TTR testers can provide phase shift measurement, vector recognition and winding balance testing in addition to turns ratio measurement.
Beyond turns ratio testing, selected Elecgene models combine additional transformer test functions, such as winding resistance and polarity validation, in a single instrument.
The Elecgene range includes compact and handheld three-phase TTR solutions for transformer commissioning, maintenance and field testing, with model-specific power and portability configurations.
A transformer turns ratio (TTR) test measures the ratio between the voltage or turns of a transformer’s windings and compares the measured ratio with the expected or nameplate value. The test can help verify whether the transformer winding ratio is consistent with its specified design and identify abnormal ratio results that may require further investigation.
A TTR tester applies a controlled test voltage to one transformer winding and measures the corresponding voltage induced on another winding. The instrument calculates the turns ratio from the measured values and, depending on the model, can also evaluate phase relationships, vector connections or other transformer parameters.
A transformer turns ratio test is used to verify the winding ratio of power, distribution and other applicable transformers during manufacturing, commissioning, maintenance and troubleshooting. Comparing measured results with the expected ratio can help identify incorrect connections, abnormal winding ratios, tap-related issues or other conditions that may require further inspection.
Single-phase TTR testing measures transformer windings one phase at a time, while three-phase TTR testing can evaluate the three phases within the same test process. Three-phase testing can improve testing efficiency and provide phase-to-phase comparison, while the appropriate test method depends on the transformer configuration and the requirements of the applicable test procedure.
TTR results are typically evaluated by comparing the measured turns ratio with the expected or nameplate ratio and checking the ratio deviation between phases. Depending on the transformer and test instrument, phase relationship, vector connection, tap position and other available test information may also be reviewed. An abnormal result should be evaluated together with the transformer configuration, test connections and applicable maintenance procedure before determining the cause.
Please tell us your testing requirements, application scenarios or project details, and our engineers will recommend the solution and quotation that suits you within 24 hours.
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